function createCookie(name, value, days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
		var expires = "; expires=" + date.toGMTString();
	}
	else{
		var expires = "";
	}
	document.cookie = name + "=" + value + expires + "; path=/";
}
function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for (var i = 0; i < ca.length; i++) {
	var c = ca[i];
	while (c.charAt(0) == ' ') c = c.substring(1, c.length);
	if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
	}
	return null;
}
function eraseCookie(name) {
	createCookie(name, "", -1);
}
function findkey(arr, val, key){
	for(var j=0; j<arr.length; j++) {
		if (arr[j][key] == val){
			return true;
		}
	}
	return false;
}
function sortByName(a, b) {
    var x = a.name.toLowerCase();
    var y = b.name.toLowerCase();
    return ((x < y) ? -1 : ((x > y) ? 1 : 0));
}